Steve Hansen has ramped up the mind games ahead of New Zealand's World Cup quarter-final with Ireland, pledging to lay false traps for master tactician Joe Schmidt.

Schmidt's famed analytical approach has yielded great success in his six years as Ireland head coach, notably the nation's maiden two victories over the All Blacks.

The former Leinster and Clermont coach devises set strike plays for each specific match, and will doubtless roll out a new playbook for Saturday's battle in Tokyo.

Ireland stunned the back-to-back world champions 40-29 in Chicago in 2016 then 16-9 in Dublin in November, leaving Hansen well aware of Schmidt's talents - but also vowing to use them against him.

"We've got weaknesses like everybody else, so you've got to look at your own weaknesses as much as anybody else's," said Hansen.

"You know that Joe does a lot of studies, so that can be a strength and a weakness. I might be able to set him up.

"The best part is we know who we're playing; they're a quality side, they've been number one this year.

"The last three results are 'loss, win, loss' so there won't be any complacency in our camp. It's pretty exciting; we're right where we want to be.

"It's taken Ireland a long time to get there (beat New Zealand) and obviously they enjoyed it. So they decided to keep doing it.

"I think there's a lot of respect from both sides. We played them in November and it was a titanic struggle and on the day they were the better side.

"Most teams we play get up to 10%  better than they normally do and they're no different.

"The big difference here is it's a do or die game for both teams. Both teams are in good nick; fresh, excited and, I can only speak on behalf of ourselves, we're really looking forward to the challenge."

New Zealand can break yet more World Cup ground with an unprecedented third consecutive triumph in Japan, while Ireland are still shaking off their 19-12 loss to the tournament hosts.

Stellar half-back pair Conor Murray and Johnny Sexton are inching back to top form for Ireland, and Hansen admitted they can elevate Schmidt's team to different heights.

"They're pretty set on how they play, just like we are; they play to their strengths," said Hansen.

"Conor Murray does a lot of kicking and they use Johnny Sexton to drive them around the park and their big forwards to carry and why would they want to change? That's been very successful for them.

"I think they're better than a one-man team but the 10 is pretty important."

The All Blacks in training last week

New Zealand's final Pool B clash against Italy was cancelled due to the impact of Typhoon Hagibis, handing Hansen's men two weeks to prepare for their quarter-final.

But Hansen insisted his side will not be ring rusty due to their extended break.

"Having a week off is not a bad thing, we're quite excited by that fact," said Hansen.

"It's allowed us to work really hard Friday. The GPS numbers were equivalent or just above what a normal Test match would be so we don't feel like we've lost any opportunity to get ourselves where we need to be.

"The exciting part is we had Saturday locked up in the hotel and had a whole day's rest when we couldn't do anything because of the storm.

"We'd like to pass on our sympathies to the Japanese people who have lost family members and property and so forth.

"Having been through a natural disaster I know it can be pretty shaky so we're very supportive of them."

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Follow Ireland v New Zealand on Saturday 19 October (kick-off 11.15am) via the live blog on RTÉ.ie/Sport and the News Now App, watch live on RTÉ2 or listen to live match commentary on RTÉ Radio 1.